The dinosaurs are recreated from DNA extracted from prehistoric mosquitoes preserved in amber. To control the population, Hammond's scientists engineer all dinosaurs to be female and require the amino acid lysine from their food, making them theoretically dependent on humans.
Dr. Malcolm warns that the park is doomed by "chaos theory" — a complex system like Jurassic Park cannot be perfectly controlled, and tiny errors will cascade into disaster. Jurassic Park by Michael Crichton EPUB
In the end, Hammond's dream is destroyed. The park is abandoned, and the dinosaurs are left to die or be killed (via a contingency plan to poison their food). The survivors learn that life cannot be contained or controlled — it "finds a way." The dinosaurs are recreated from DNA extracted from